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(2*x)/5 = -12/5 // + -12/5
(2*x)/5-(-12/5) = 0
(2*x)/5+12/5 = 0
2/5*x+12/5 = 0 // - 12/5
2/5*x = -12/5 // : 2/5
x = -12/5/2/5
x = -6
x = -6
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